Vcls vms missing. But the task will fail since the .

Vcls vms missing After deploying CO and HCI services using PFxM 3. Any other scenario where the vCLS VMs were supposed to be moved and did not get moved. For clusters prior to 7. hdcs_cluster_agencies table might not be cleaned up simultaneously. 0 deprecates vCLS, and the service will be removed in a future vCenter release. 8. Removing the vcls vm in the esxi host client Now that the vCLS VM is unregistered from the host client side, the vSphere Client shows it as removed as After deploying CO and HCI services using PFxM 3. vCLS deploys lightweight agent VMs directly on the cluster being managed, and those VMs provide a decoupled and distributed control plane to offload some of the management responsibilities from May 21, 2025 · Prior to unmounting or detaching a datastore, check if there are any vCLS VMs deployed in that datastore. 0 Update 2 or later. So you need to enable Monitor/MWAIT in BIOS, then vcls vm will be powered on automatically. Dec 24, 2024 · Following some guidance on how to avoid/remove inaccessible vCLS VMs based on some vSAN Workflows: - vSAN Disable If the Customer is disabling vSAN on a Cluster where vCLS VMs residing on its vSAN Datastore, then these vCLS VMs will become inaccessible. KVM does not pass the monitor flag to the host vm by default, as it once was not capable of doing so, and didn't want to break anything, so you have to manually add it. The vCenter Server resides on the vSAN datastore, and there are no other shared datastores available in the cluster. 0 VMware introduced vSphere Cluster Services (vCLS). Jul 29, 2025 · Entering and exiting Retreat mode option will not deploy new vCLS VMs The ESX Agent Manager log on vCenter does not show any errors (/var/log/vmware/eam/eam. 0 U3 it is now possible to configure the following for vCLS VMs: Preferred Datastores for vCLS VMs Anti-Affinity for vCLS VMs with specific other VMs I created a quick demo for those who prefer to watch videos to learn these things if you don’t skip to the text below. Disable retreat mode by changing the config. 370, 8. esxi hosts1 ESXi, 7. The new vCLS VMs deliver a secure and high After deploying CO and HCI services using PFxM 3. 03. 0 Update 1, and we reported on that in detail here . vCLS VMs are deployed as soon as a first host is added to a new cluster. Sep 24, 2024 · There were some other challenges with the vCLS VMs and as a result the team decided to create a new design for vCLS. Up to three vCLS VMs are required to run in each vSphere cluster, distributed within a cluster. (Which is disturbing, given that even the owner of the system can't resolve issues with the vCLS systems. Sep 14, 2025 · vCLS VMs fail to deploy in a cluster due to EAM Agency being disabled after a vSAN Cluster shutdown. If this file is missing but the Feb 20, 2022 · There are virtual machines with missing “Assign virtual machine to resource pool” privilege that need to be moved into the newly created resource pools. When a datastore is placed in maintenance mode, if the datastore hosts vCLS VMs, you must manually storage vMotion the vCLS VMs to a new location or put the cluster in retreat mode. This is mandatory as those vCLS VMs are deployed on each vSphere cluster when the vCenter Server is upgraded to v7. ” After deploying CO and HCI services using PFxM 3. The VMs have migrated but Nov 3, 2021 · The agent VMs are managed by vSphere Cluster Services. Jul 20, 2025 · One or more vCLS VM (s) have been deployed in the cluster, but they are not powered on. In these clusters the number of vCLS VMs is one and two, respectively. Oct 6, 2021 · We had the same issue and we had the same problem. Only power-off and hard stop operations are permitted for troubleshooting purposes. Oct 3, 2023 · As you know, VMware High Availability (HA) as well as DRS, when activated, vSphere creates those system vCLS VMs. But the task will fail since the Mar 31, 2025 · Infravisor service on ESXi host is in Not running state. Coz when the update was being carried out, it moved all the powered on VMs including the vCLS to another ESXi, but when it rebooted after the update, another vCLS was created in the updated ESXi. Oct 12, 2020 · This happened to be the shared datastore that DRS chose to store its vCLS VMs on. Trying to enter the Host into maintenance mode fails because the vCLS vm is still running and now will not migrate to another host? is there something i'm missing here, do i need to power the VM down first? Jan 31, 2023 · This post is about an issue in VMware vCenter that causes vCLS VMs fail to deploy. We all know that upgrading your system can be a daunting task, especially when something goes wrong. log). This article provides required steps to successfully complete datastore maintenance workflows which might be impacted due to the placement of vCLS VMs. vCLS VM placement is taken care of by the vCenter Server, so user is not provided an option to Oct 27, 2020 · Here’s the summary of how to delete the VMs: Go to your vCenter Server object, go to the configure tab, then go to “Advanced Settings”, add the key “config. When there is clearly a folder named vCLS. Note that vCenter 9. This task explains how to put a cluster in retreat mode. Hey there, folks. Without these VMs, some services like vSphere DRS and HA cannot function properly in vSphere versions prior to 9. vcls. These are just agent VMs. Dec 12, 2017 · I found a way to pass the monitor flag to a host vm. This feature ensures cluster services such as vSphere DRS and vSphere HA are all available to maintain the resources and health of the workloads running in the clusters. Note: The above workaround will only update the cluster power status, if there are any vCLS related issues in the cluster refer vCLS VMs are not re-created in a vSAN Cluster following a complete shutdown of a vSAN cluster Nov 5, 2020 · Discover how orphaned virtual machines impact your environment performance, plus tricks and tips on how to recover orphaned VMs. 2, 17630552 Sep 15, 2024 · I'm not sure if drs will work without the vcls vm's Edit3: I've put the cluster into retreat mode for an hour and back to system managed, still no vcls vm's, restarted vcsa, all services are running such as eam, all certs are perfectly fine for at least another year. The number of vm's in the vCLS folder varies between 23-26 depending on when I look at it, but the vms themselves are constantly being redeployed. Mar 24, 2023 · Then I realized that I have 9 vCLS all in the cluster. I have toggled, waited many minutes, restarted vCenter, many many things. 0 Update 3 vCLS is now implemented as what I would call a container runtime, sometimes referred to as a Pod VM or PodCRX. Jun 14, 2023 · Tonight's troubleshooting tidbit is an important topic that you'll want to stick around for. Ensure that Delay Maintenance Mode is enabled. . When I put a host into maintenance mode for updates the vCLS vm is moved to the other host. these VMs. vCenter makes this upgrade seamless by waiting until the first Embedded vCLS VM becomes available before it deactivates External vCLS and destroys those VMs. Nov 17, 2020 · Do note, vCLS VMs will be provisioned on any of the available datastores when the cluster is formed, or when vCenter detects the VMs are missing. The vCLS monitoring service will power them back on after 30 seconds if you try to shut them down. vCLS automatically creates a max of 3 agent VMs per cluster in an existing deployment when vCenter Server is upgraded to vSphere 7 update 1. Mar 28, 2024 · Tried to set vCLS with retreat mode and disable it, but vCLS still cannot deploy on any ESXi host. What is a vCLS VM? The vCLS VM introduced in vSphere 8. Feb 3, 2025 · VxRail enhanced cluster shut down process in 7. Oct 21, 2020 · This didn't work for me, the article you postd "suggests" that you can vMotion but doing so fails. Test scripts Hi, with vSphere 7. There is a procedure for setting the cluster to retreat mode. Oct 23, 2020 · - not exactly it is the VCSA Advanced Settings the first part of the code snippet actually creates the advanced setting (so that you can put the vCLS in retreat mode), the second part changes the vlue to false, effectively removing the vCLS agent VMs, so that the cluster can be shutdown. Aug 28, 2025 · When an entry related to vCLS is removed from the vpx_ext_data table in the vCenter database, it correctly triggers the automatic removal of the associated vCLS agency VMs from vCenter. g. The only way I have found to recover is pull the power on the crashes host (!) This is Jul 14, 2023 · During initial cluster configuration, I had not specified a list of datastores that should be used of placement of vCLS VMs under Configure > vSphere Cluster Service > Datastores. An Auto-Provisioning tag is present on the vSAN cluster to allow automatic deployment of vCLS VMs if they are missing or faulty. Also the EAM recreates missing VMs: The lifecycle for vCLS agent VMs is maintained by the vSphere ESX Agent Manager (EAM Aug 11, 2025 · The placement of vCLS VMs is managed automatically by the vCenter Server. 4, the Migrate vCLS VMs button is missing due to a code issue. May 18, 2022 · New vCLS VMs will not be created in the other hosts of the cluster as it is not clear how long the host is disconnected. However, this is a special VM, with a very minimal operating system and uses a container run-time, which is what allows the vCLS VM to run on vSphere. This involves setting temporary advanced settings that lead to the deletion of the vCLS VMs by the cluster. The vCenter database (VCDB) retains inaccessible datastore records when they are not properly removed, leaving objects in Oct 1, 2025 · The events tab for the VCLs VMs contains warning events with the following message: Privilege check failed for user VSPHERE. Feb 20, 2021 · vSphere Clustering Service (vCLS) is a new capability that is introduced in the vSphere 7 Update 1 release. This creates a point at which a cluster is upgraded from External vCLS to Embedded vCLS when hosts exit Maintenance Mode after upgrading to a supported version. The Tech Journal – 15 Oct 20 Oct 15, 2020 · These configurations will result in either 1 or 2 vCLS VMs named “vCLS (1)” and “vCLS (2)”. Since these vCLS VMs are still showing up in the Inventory, the vCLS Services will try to power these on. If vCLS health gets So with vSphere 7, there are now these "vCLS" VMs which help manage the cluster when vcenter is down/unavailable. You remove/readd a service, the blue Lifecycle Mode messages comes up saying the vCLS VMs must be moved to shared storage, but when prompted for which storage pool to put them in there is nothing in the dropdown. Jul 16, 2025 · The vCLS VMs cannot be migrated because the datastore volume where the vCLS VMs reside is unmapped from all ESXi hosts directly from the storage side for a maintenance activity. However, the corresponding agency entry in the hdcs. We would like to show you a description here but the site won’t allow us. But the real question now is why did VMware make these VMs visible (to the administrators) in the first place? Why they just didn't hide Dec 19, 2021 · Unable to create vCLs VM on vCenter Server VMware / Vmware vSphere December 19, 2021 July 25, 2024 Nov 3, 2020 · With vSphere 7 U1, VMware introduced vSphere Clustering Service (vCLS), which helps in a situation when vCenter Server becomes unavailable. The VMs are not visible in the "hosts and clusters" view, but should be visible in the "VM and templates" view of vCenter Server Removed host from inventory (This straight away deployed a new vCLS vm as the orphaned vm was removed from inventory with the removal of the host) Logged into ESXi UI and confirmed that the Datastore the orphaned VMs was on was removed. clusters. I can't find the VMX in the host datastore or vSAN. As a result, the virtual machine files became inaccessible, preventing vMotion and causing the maintenance mode task to stall. 000 or newer versions, this issue is already fixed. In previous versions of vSphere, putting a cluster in retreat mode was a bit daunting and was a manual process. Users are not expected to maintain the lifecycle or state for the agent VMs, they should not be treated like the typical workload VMs. Sep 9, 2025 · Starting with vSphere 7. Why vCLS Matters vCLS significantly enhances the resilience and scalability of VMware clusters by enabling essential services to function independently of vCenter Server. 0 U3. 0 Update 1 and later. Actually, when I had the datastore in inventory and everything was healthy, there was a vCLS VM that was using the datastore. Aug 20, 2024 · We have a resource that is latched on to the datastore. Because these VM files are locked by a host, svMotion cannot move these VMs to a different datastore and because these VMs are not moving from the datastore that you are trying to put in Jul 24, 2022 · Way back in 2020, VMware released vSphere 7 Update 1 and introduced the new vSphere Clustering Services (vCLS)↗ to improve how cluster services like the Distributed Resource Scheduler (DRS) operate. 370 and 8. Mar 31, 2023 · Hi, I work on a vCenter 7. managedBy properties, the above parameters are missing for vCLS VMs. This leads to 2 slots (2 vCLS Virtual Machines) for 1 host, which is expected to be 1 slot for 1 host. When there is only one host. Right click on the VM and then click on Upgrade VM Compatibility. Note: 60 days is the default Jul 5, 2022 · If you added it to the cluster, it will have the same services as other hosts in the cluster. It’s first release provides the foundation to work towards creating a decoupled and distributed control plane for clustering services in vSphere. The "monitor/mwait" CPU feature is disabled in the server BIOS settings C-States power management settings are not properly configured for "autonomous" operation Outdated server firmware may contribute to the problem These missing CPU features prevent vCLS VMs from powering on, as these VMs require specific CPU capabilities to function properly. A note on licensing in regards to the vCLS VM For VMware environments that use VM based licensing like vSphere for ROBO (Remote Office Branch Office), vCLS VMs are shown in the licensing interface as counting towards licensed VMs. Validation shows that vCLS VMs exist but are powered off, confirming that automatic vCLS provisioning is not reattempted due to VM name conflicts. But when you have an Essentials or Essentials Plus license, there appears to be NO WAY to move these VMs to other storage - say, like when you are decommissioning the storage. Jul 2, 2025 · If you’ve ever stared at those mysterious vCLS VMs running in your clusters, wondered what they were doing, and occasionally cursed them during your backup configs or host evacuations — I’ve got great news. enabled” and set it to false. Even though you dont use EVC at cluster level, by default vcls vm have Per-VM EVC enabled. It hangs every time on 17% and crashes the other host. vCenter 7. local ou les comptes avec le rôle vCLSADMIN permission. These VMs should be treated as system VMs. Occasionally, however, it is necessary to remove these VMs from a datastore if it is to be put into maintenance mode, for example. These services are used for DRS and HA in case vCenter which manages the cluster goes down. Jan 7, 2025 · A vcls virtual machine is showing in inventory as inaccessible on that datastore I couldn’t remove the vCLS virtual machine from inventory in the vSphere Client. " The host is hung at 19% and never moves beyond that. The events tab for the VCLs VM (s) contain warning events with the following message: vCLS uses agent virtual machines to maintain cluster services health. If there is no VM configuration file (usually a file named for the virtual machine) with the ". Jun 26, 2024 · VM management is totally automatically: when placing a host currently running an Embedded vCLS VM into maintenance mode, the host will automatically spin-down the Embedded vCLS VM and another host in the cluster will automatically spin-up a new Embedded vCLS VM. vCLS VMs were forcefully deleted from the VMs without the host being in Retreat Mode. I have now added the datastore list under the configuration. When we restarted the vSAN cluster, vsanvcmtd requested EAM to enable vCLS VMs. go to the vms config file you want to have monitor pass through, in my case it is the VM with the VMID 101: Code: Remove individual clusters as needed, or remove all lines between <vcls> and </vcls> to reset all configs for the clusters in the vCenter. Users should not rename or delete this folder. Enable VM Prioritization and add all User VMs to a priority group except for the vCLS VMs. Sep 1, 2024 · After that completes, taking the cluster out of retreat mode will trigger vCLS to re-deploy the vCLS VM’s, power them on…and all should be good again. Are Aug 4, 2025 · vSphere Cluster Services (vCLS) is a new feature in vSphere 7. 0 Update 3 or when you have a new vSphere 7. The general guidance from VMware is that we should not touch, move, delete, etc. 2. When you do this vcenter will disable vCLS for the cluster and delete all vcls vms except for the stuck one. So the 1st ESXi to update now have 4 vCLS while the last ESXi to update only have 1 vCLS (other vCLS might had been created in earlier updates). What am I missing? Thanks, Andy After deploying CO and HCI services using PFxM 3. ) We tried: - deleting he vCLS systems from storage (they vSphere DRS is a critical feature of vSphere, which is required to maintain the health of the workloads running inside the vSphere cluster. Put the host with the stuck vcls vm in maintenance mode. vCLS uses agent virtual machines to maintain cluster services health. To avoid failure of cluster services, avoid performing any configuration or operations on the vCLS VMs. vCenter thinks it is clever and decides what storage to place them on. Sep 9, 2025 · This issue can be due to any of the following: The underlying storage device or LUN associated with the datastore may have been removed, decommissioned, or failed without proper cleanup. Symptoms: Datastore enter-maintenance mode tasks might be stuck for long duration as there might be powered on vCLS VMs residing on these datastores. domain-c<identifier>. Failed migrating vCLS VM vCLS (85) during host evacuation. 0 Update 3 is based on vSphere Pod technology. Both licenses lack Storage vMotion Jan 29, 2023 · Cluster🡪Configure🡪vSphere Cluster Services🡪Datastores Les VMs seront créées automatiquement dans un dossier vCLS et pour un maximum de 3 VMs par cluster. 0 Update 1, vSphere DRS for a cluster depends on the health of vSphere Cluster Services (vCLS). 000 releases, to monitor vCLS VMs status, and ensure they are deleted before proceeding the cluster shutdown process. Jul 17, 2024 · In vSphere 8. If host C has to be rebooted, will vSphere motion both vCLS VM's? Aug 6, 2021 · VMware introduced vSphere Cluster Services (vCLS) in vSphere 7. DRS is on but in manual mode. config. vCLS VMs are named vCLS (<number>). ESXi host disconnect/reconnect), vpxd may reserve an additional slot for vCLS Virtual Machine under race condition. 0 Update 1, the vSphere Clustering Services (vCLS) is made mandatory, deploying its VMs on each vSphere cluster. vCLS VMs are always powered-on because vSphere DRS depends on the availability of these VMs. 370 version, BEFORE performing VxRail cluster shut down operation, it is required to manually ensure all The vCLS VM is probably the object reference causing the old datastore object to show still. The vCLS agent virtual machines (vCLS VMs) are created when you add hosts to clusters. 0 (and VCF 9. I get they are there but why on my three hosts did one host get two vCLS VM's? Host A got 1, host C got 2 of the VM's and host D got none. Jun 21, 2025 · VMware vCenter 9. With vSphere 9. , then EAM attempted to power on the vCLS-XXXXXX VM. 0 to 8. vCLS VMs can be migrated to other hosts until there is only one host left. To verify that this has occurred, navigate to the VM's directory in the Datastore Browser for the appropriate datastore. LOCAL\vpxd-extension-xxxx for missing permission. Unregistered/deleted vCLS VMs directly from ESXi Hosts Attempted the retreat mode via vCenter Advanced Settings vCenter reboots Additionally, under the vCenter Extensions Sep 13, 2023 · - A few things regarding vCLS: 1. This is reported in vCenter Server 7. Due to an unknown reason, the vSAN cluster was shutdown. You cannot simply power off vCLS VMs. In vSphere 7. Or if you shut it down manually and put the host Oct 14, 2020 · Have you tried to power cycle that vCLS? Is it possible also to login into vCLS for diagnostic puposes following the next procedure: Retrieving Password for vCLS VMs. These VMs can be identified using specific properties such as ManagedByInfo. Most notably that the vCLS systems were orphaned in the vCenter inventory, and the administrator@vsphere. enabled value to " true ". vCLS is activated when you upgrade to vSphere 7. Mar 15, 2024 · Retreat Mode The vSphere administrator has little influence on the provisioning of these VMs. In this blog post, we'll be discussing an issue that many of you may be facing after upgrading your vSphere 8. Jul 2, 2021 · The vCLS VMs are only shown to users which are part of the administrator group. If the datastore that is being considered for "unmount" or "detach" is the only datastore connected to the host and this datastore has vCLS Dec 30, 2023 · I was recently contacted by a customer that needed help with some vCLS VMs that somehow had gotten moved to a datastore and now resided on servers that they weren’t registered on. vCenter uses an internal logic to select an appropriate shared datastore for the cluster if one is available and has sufficient capacity to host these VMs. These vCLS mini-VMs, also called agent VMs, Aug 24, 2025 · Issue/Introduction vCLS VMs are not being created under vCenter clusters and there are constant deployment failures under recent Tasks and Events Enabling and disabling retreat mode on the cluster does not resolve the issue EAM service log specifically shows a 526 Invalid Certificate Exception error: My Recent tasks pane is littered with Deploy OVF Target, Reconfigure virtual machine, Initialize powering On, and Delete file tasks scrolling continuously. If that host is also put into Maintenance mode the vCLS VMs will be automatically powered off. Jun 17, 2021 · As you may know, with vSphere 7 Update 1 VMware introduced the vSphere Clustering Service. I am trying to put a host in mainitence mode and I am getting the following message: "Failed migrating vCLS VM vCLS (85) during host evacuation. This issue is expected to occur in customer environments after 60 (or more) days from the time they have upgraded their vCenter Server to Update 1 or 60 days (or more) after a fresh deployment of vSphere 7. Starting with vSphere 8. When the datastore went inaccessible (I removed the NVMe drive), this vCLS VM was stuck in inventory in a disconnected state. vSphere Cluster Services VMs will automatically power off when the single host cluster is put into Maintenance Mode, thus maintenance workflow is not blocked. When vCLS VMs are being deployed, they are created in a folder called "ESX Agents" instead of the default vCLS folder that stays empty. Upon verifying the config. Any idea what could be causing this? Nov 27, 2024 · You click the "migrate" vCLS VM's button and the VMs remain in place. 0 Update 3 we introduce Embedded vSphere Cluster Services (Embedded vCLS). Nov 12, 2025 · vCLS VMs are by default deployed with a " per VM EVC " mode that expects the CPU to provide the flag cpuid. Mar 9, 2022 · Hey all, I am trying to get powercli to find all the vCLS VMs, but when I try to "Get-Folder 'vCLS' | Get-VM" it says: Get-Folder: 3/9/2022 9:56:22 AM Get-Folder Folder with name 'vCLS' was not found using the specified filter (s). While looking into the ESX Agent Manager we can see the status as uninstalled. Les VMs vCLS ne sont pas visibles sur le vcenter que sur la vue VMs and Templates et avec le user administrator@vsphere. While powering On the vCLS VM vpxd service crashes with core dump. This ensures that the vCLS VMs will not be shut down or powered on by PowerChute. A Quick Recap: What the Heck Was vCLS? Mar 25, 2024 · While you can adjust the default permissions for the administrator [at]vsphere [dot]local account, I decided to take a simpler approach by just going directly to the ESXi host which is managing the vCLS VM. VSphere DRS depends on the availability of vCLS VMs. 0 Update 1 is done. 0. 2. Also if you are still facing issues maybe you can power it off, delete it and then vCLS service will re-create it automatically. I've tried several methods listed below but still am having issues. Based on vSphere Pod technology and managed at a system level, we've focused on reducing impact to day-to-day operations while maintaining full compatibility. 0 Update 1. Save the document after making the changes. mwait. The Issue: When toggling vcls services using advanced configuration settings. 0 also deprecates the requirement for vCLS to be active on clusters and recommends vCLS to be switched to retreat mode to avoid the redundant usage of resources. Where you certainly notice the difference, compared to older releases, are the vCLS agent VMs shown in vCe Feb 20, 2025 · We have a 2 host cluster. 00500 - vSAN 4 node cluster. VCLS is just the term used for the Cluster services , The host may or may not have a virtual machine for VCLS management running on it. Recently noticed the vCLS VMs in a vSAN cluster weren't running and vCenter gave no options to start. vCLS on a cluster configures a quorum on vCLS system VMs on the cluster. It even says this in the "Automation and vCLS" chapter: For customer using scripts to automate tasks, it’s important to build in awareness to ignore the agent VMs in, for example clean-up scripts to delete stale VMs. It's very confusing to me how these vCLS VMs can help provide Clustering Service. So I went over to the host client, and sure enough, I could unregister it here. Because of this cluster functions like DRS doesn't work Jun 9, 2022 · When a host is placed into Maintenance Mode, the vSphere Cluster Services agent VMs are migrated to other hosts within the cluster like regular VMs. When disconnected host is connected back, vCLS VM in this disconnected host will be registered again to the vCenter inventory. Jun 26, 2025 · Symptoms: A vSphere DRS cluster containing two ESXi hosts may show three vCLS virtual machines instead of two per the product documentation . So the vCLS VMs along with their folders got created on one of the datastores that I don't want included for vCLS placement. No DRS but VSphere HA. After a bit of internal research I discovered that there is a permission missing from vCSLAdmin role used by the vCLS service VMs. The basic architecture for the vCLS control plane consists of maximum 3 virtual machines (VM), also referred to as system or agent VMs which My from reading the blog is: Just ignore those VMs. Nov 17, 2025 · Deployment and Management of vCLS VMs All vCLS VMs for a datacenter inside a vCenter Server are stored in a specific folder named vCLS. If you’ve already reinstalled everything twice and tried both IPs and DNS names, I’d start by checking if the vCLS VMs are actually missing or just stuck. local account had "No Permission" to resolve the issue from the vCenter DCLI. Configure a 0 second duration for VM Shutdown and VM Startup for the Un-prioritized group. domain-c (number). (In case you're not aware, vCLS stands for vSphere We would like to show you a description here but the site won’t allow us. For this, Monitor/MWAIT needs to be enabled in the BIOS of the physical server ESXi is running on. I want to shutdown all VMs possible so I can then shutdown Nutanix storage and then power off the ESX hosts. Jan 2, 2023 · Hello, is this resolved ? I faced similar issue today. Sep 10, 2025 · The VM configuration file is missing If the VM configuration file is missing, the VM will be "invalid" in the vCenter inventory. The status of the cluster will be still Green as you will have two vCLS VMs up and running. If there are any, migrate those VMs to another datastore within the cluster, if there is another datastore attached to the hosts within the cluster. This service should be in Running state. vCLS is also activated on clusters which contain only one or two hosts. If your cluster is on 7. Sep 28, 2021 · Starting with vSphere 7. vSphere 7. These vCLS mini-VMs, also called agent VMs, Jan 19, 2025 · Wait for 1 to 2 minutes to make sure the VCLs VM's were removed from the cluster. vmx" extension. The vCLS agent VMs are lightweight, meaning that resource consumption is kept to a minimum. 0 Update 3 deployment. vSphere Resource Management describes resource management for VMware ESXi and vCenter Server environments. 0 Update 1, VMware has released a platform/framework to facilitate them to run independently of the vCenter Server instance availability vCLS uses agent virtual machines to maintain cluster services health. Any possibility you could log into the host directly via SSH and see if the missing vCLS VM is registered on it? Apr 15, 2025 · In some cases (e. domain-c<number>. 0), VMware is finally letting us kill vCLS for good. 1. Retreat Mode is a way to tell vCenter: “Stop running vCLS VMs on this cluster. Jun 11, 2024 · After deploying CO and HCI services using PFxM 3. The vCLS service is deployed on the host or cluster as a virtual machine on an ESXi host. Only administrators can perform selective operations on vCLS VMs. The plan is to get more independent of vCenter Server for certain cluster features like for example DRS. Renaming or deleting the folder could result in the failure to create new vCLS VMs for clusters, impacting the health of vCLS. enabled set to False, it does not remove existing vCLS virtual machines. Feb 9, 2025 · Automation scripts should be configured to ignore vCLS agent VMs to prevent accidental disruptions. When the host comes out of maintenance mode vCenter tries to move the vCLS back to original host. This inconsistency leaves a stale record, which prevents the system from provisioning new The vSAN cluster was shut down for maintenance, and after being powered back on, vCLS VMs fail to deploy. Jul 24, 2025 · Refresh your browser to check if all the vSAN-related menus are now available in the UI. VMWare 7. Is there a way to re-deploy these? I had no luck with retreat mode, and now the three remaining VMs show orphaned. Users are not provided with the option to manually select the target datastore for vCLS VM placement. 1. In the vCenter task list, can see vCenter continue to deploy vCLS and then destroy it. Plus they stay powered off and I have this message on all my clusters : " vSphere DRS functionality was impacted due to unhealthy state vSphere Cluster Services caused by the unavailability of vSphere Cluster Service VMs Jul 21, 2025 · VCLS VMs are in inaccessible state due to storage Issue where VCLS VMs were deployed Also, in Advance settings we can VCLS entries which is not getting modified to True (refer below screenshot) Jan 22, 2025 · vSphere Cluster Services (vCLS) is activated by default and runs in all vSphere clusters. I'm trying to get my vSphere/Nutanix shutdown steps and scripts/snippets documented, and with the advent of the three vCLS VMs used to maintain DRS and HA services in vCenter 7, I'm a little unsure what to do. Is there any way that I can force the agent manager to re-create this process entirely? Hello, in the process of troubleshooting a vCLS VM issue where they wouldn't power on, I deleted them from the hosts they were on. Posting to hope I can receive some assistance. Nov 12, 2025 · This article provides information on resolving the vCLS health issues, so that DRS functions correctly in the cluster. Will removing the host and re-adding to vCenter re-deploy these from ova/ovf? To add, the remove Aug 6, 2021 · VMware introduced vSphere Cluster Services (vCLS) in vSphere 7. If you are part of the Admin group, or logged in as admin, you should be able to see them. As you know, if you lose vCenter Server, you also lose the Distributed Resource Scheduler (DRS), so your VMs are no longer balanced across your cluster. Jun 27, 2025 · What is vCLS and Retreat Mode? vCLS deploys lightweight agent VMs in every vSphere cluster to maintain cluster services. Jan 13, 2025 · Normally, vCLS should just deploy itself automatically, but if it’s missing and DRS isn’t working, something’s definitely off. These VMs are necessary to maintain the health of the cluster services. 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